Scissorhands is almost ready, it just needs a cheapo blade fitted. As it is well under weight, I will look at mounting a camera for some up-close & personal action footage. The added advantage is that I can swap back to the normal bar for demo featherweight matches.
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Australian 2015 Featherweight champion
UK 2016 Gladiator champion

I was wondering if you'd tried Aquacut in Minto. I’m a member of a Sydney based FIRST Robotics Competition team, here’s a video of our robot we built this year if your interested: https://vimeo.com/156129484

At the Sydney Regional Competition we had some problems with some 7075-T6 aluminium gears breaking and the night before the finals of the competition, we rang up Aquacut and had spare gears water-jet cut out of ½ inch stainless steel plate within 4 hours. We paid rush money, which wasn’t cheap but it could be an option for you.
http://www.aquacut.com.au/

They just might be my new favourite supplier. The idea of rush jobs is pretty novel at most metalwork businesses. Neat FIRST robot BTW
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Australian 2015 Featherweight champion
UK 2016 Gladiator champion

That is a cool FIRST bot, love the firing mechanism.

If you don't rename it Sawsorhands I will be disappointed
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Jamie
RogueTwo Robots
www.rogue-two-robots.vze.com

With great power, comes great reliability

I was thinking about a temporary name change...[/i]
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Australian 2015 Featherweight champion
UK 2016 Gladiator champion

I am going out to buy the saw blade today (the one in the photo belongs to my table saw) but is there any reason I can't get a replica of a saw cut out of thin Hardox or Bisalloy? It is quite hard to find an all steel saw blade nowadays and the TCT blades chip & break easily.
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Australian 2015 Featherweight champion
UK 2016 Gladiator champion

The frame can be a lot smaller and lighter. This is plain overkill.

Its only about 200 to 300 grams of overkill . After reading Glen's comments about Citizen Flip's frame bending in the gearbox & ram area, I wanted to be sure to avoid the same issue so I made the back of the frame extra strong.

For the next version, the base plate and the large side panels will be skeletonised and the sides will get a covering of HDPE. Rhino predicts a 370 gram weight saving:



The new design at the bottom should be more than strong enough and it can be skeletonised even more if it is cut out of Hardox.
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Australian 2015 Featherweight champion
UK 2016 Gladiator champion

Scissorhands:

For the outrageous price of new blades, I decided to use a worn metal cutting blade I already had. It has so many tungsten teeth that at least a few will make it through the show:



I also made an adaptor to fit the 32mm blade bore to the 1" spin shaft. It is 12mm thick, which raises or lowers the blade depending on which of the blade it is installed. On the low setting, the saw virtually scrapes the floor. To mis-quote and old video game "All your wheels are belong to me"
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Australian 2015 Featherweight champion
UK 2016 Gladiator champion

One of these is not like the others:

There was a last minute panic when I did a test spin-up of the saw - the bot almost shook itself apart and the front gyrated around a 2 to 3cm circle. I tracked it down to a bent output shaft and swapped it out:



After trying every shaft, all but one are bent . The one good shaft is now installed but for some reason the bot still gyrates around at lower saw speeds. Once it gets up to around 50% power all the shaking suddenly stops, so I have to run Scissorhands at full power for it to drive properly (what a shame )
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Australian 2015 Featherweight champion
UK 2016 Gladiator champion

Situation Not As Planned:

Scissorhands was a casualty of the huge storm Sydney experienced over the weekend; over Saturday night the workshop roof leaked in several places and poor old Scissorhands was right under one of them!



It is now drying out and the main problem is the electronics as its hard to get into the parts to check if they are dry before powering up for a test. Also, all the steel parts have a nice coat of rust forming .

There probably isn't any permanent damage but its disappointing to miss my first Sportsman competition.

Mr T:

The plastic armour is now cut to fit the frame; it worked out much better than expected and fits tightly around the steel frame:



The frame is getting cleaned up with a flap disk before tack welding later in the week.
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Australian 2015 Featherweight champion
UK 2016 Gladiator champion

That armour looks pretty well crushinator proof, I'd put that in the plus column.
For your electronics if you can wash them out with deionised water then put them as a unit into the oven at like 40C for a few hours it should clear it up hopefully. Normally they oven IC's at 60C or so to dry them out but I'd be worried about your plastics.
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Mechanical engineers build weapons, civil engineers build targets

Good point, I hadn't thought of that bonus. I was also thinking of making it axe resistant by adding a thin sheet of titanium over the top plastic panel, or just doubling up the HDPE in that area.

I should have the weight to do it; the steel frame has just been cut down by 1Kg
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Australian 2015 Featherweight champion
UK 2016 Gladiator champion

what's the height of the armour wall?
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The Engine Whisperer - fixer of things